Add more explicit log on 'ionic cap build' error

[da-Kai]

before

Error: Non-zero exit from subprocess.
    at Integration.<anonymous> (/usr/lib/node_modules/@ionic/cli/lib/integrations/capacitor/index.js:53:27)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async BuildCommand.getInstalledPlatforms (/usr/lib/node_modules/@ionic/cli/commands/capacitor/base.js:114:21)
    at async BuildCommand.isPlatformInstalled (/usr/lib/node_modules/@ionic/cli/commands/capacitor/base.js:130:27)
    at async BuildCommand.checkForPlatformInstallation (/usr/lib/node_modules/@ionic/cli/commands/capacitor/base.js:228:19)
    at async BuildCommand.preRun (/usr/lib/node_modules/@ionic/cli/commands/capacitor/build.js:95:9)
    at async BuildCommand.execute (/usr/lib/node_modules/@ionic/cli/lib/command.js:65:13)
    at async Executor.run (/usr/lib/node_modules/@ionic/cli/lib/executor.js:55:9)
    at async Executor.execute (/usr/lib/node_modules/@ionic/cli/node_modules/@ionic/cli-framework/lib/executor.js:71:13)
    at async Object.run (/usr/lib/node_modules/@ionic/cli/index.js:111:9)

after

Error: 'capacitor config --json' failed with: 
> [error] Parsing capacitor.config.ts failed.
>         
>         Error: EACCES: permission denied, open '/home/git/fems/ui/capacitor.config.ts'
>         at readFileSync (node:fs:455:20)
>         at require.extensions..ts (/home/git/fems/ui/node_modules/@capacitor/cli/dist/util/node.js:15:54)
>         at Module.load (node:internal/modules/cjs/loader:1205:32)
>         at Module._load (node:internal/modules/cjs/loader:1021:12)
>         at Module.require (node:internal/modules/cjs/loader:1230:19)
>         at require (node:internal/modules/helpers:179:18)
>         at requireTS (/home/git/fems/ui/node_modules/@capacitor/cli/dist/util/node.js:37:15)
>         at loadExtConfigTS (/home/git/fems/ui/node_modules/@capacitor/cli/dist/config.js:90:54)
>         at loadExtConfig (/home/git/fems/ui/node_modules/@capacitor/cli/dist/config.js:126:16)
>         at async loadConfig (/home/git/fems/ui/node_modules/@capacitor/cli/dist/config.js:26:18)
> 
    at Integration.<anonymous> (/usr/lib/node_modules/@ionic/cli/lib/integrations/capacitor/index.js:57:27)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async BuildCommand.getInstalledPlatforms (/usr/lib/node_modules/@ionic/cli/commands/capacitor/base.js:114:21)
    at async BuildCommand.isPlatformInstalled (/usr/lib/node_modules/@ionic/cli/commands/capacitor/base.js:130:27)
    at async BuildCommand.checkForPlatformInstallation (/usr/lib/node_modules/@ionic/cli/commands/capacitor/base.js:228:19)
    at async BuildCommand.preRun (/usr/lib/node_modules/@ionic/cli/commands/capacitor/build.js:95:9)
    at async BuildCommand.execute (/usr/lib/node_modules/@ionic/cli/lib/command.js:65:13)
    at async Executor.run (/usr/lib/node_modules/@ionic/cli/lib/executor.js:55:9)
    at async Executor.execute (/usr/lib/node_modules/@ionic/cli/node_modules/@ionic/cli-framework/lib/executor.js:71:13)
    at async Object.run (/usr/lib/node_modules/@ionic/cli/index.js:111:9)